Top Inventors at Nikka Limited All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Matsuo Harada | 2 |
| 2 | Ryusuke Kasai | 2 |
| 3 | Toru Hishinuma | 2 |
| #4 | Haruki Tateishi | 1 |
| #5 | Hideyuki Yamamoto | 1 |
| #6 | Kiyoshi Matsumoto | 1 |
| #7 | Shiro Saito | 1 |
| #8 | Takashi Okada | 1 |
| #9 | Yoshito Kawakami | 1 |
| #10 | Ikuo Sawaguchi | 1 |
| #11 | Kiyonobu Omi | 1 |
| #12 | Tsutomu Nambu | 1 |